package com.npr.controller;

import com.npr.annotation.LoginRequired;
import com.npr.entity.User;
import com.npr.service.FollowService;
import com.npr.service.LikeService;
import com.npr.service.UserService;
import com.npr.util.CommunityConstant;
import com.npr.util.CommunityUtil;
import com.npr.util.HostHolder;
import com.qiniu.util.Auth;
import com.qiniu.util.StringMap;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;

@Controller
@RequestMapping("/user")
public class UserController implements CommunityConstant {
    private static final Logger logger = LoggerFactory.getLogger(UserController.class);
    @Value("${community.path.upload}")
    private String uploadPath;
    @Value("${community.path.domain}")
    private String domain;
    @Value("${server.servlet.context-path}")
    private String contextPath;
    @Autowired
    private UserService userService;
    @Autowired
    private HostHolder hostHolder;
    @Autowired
    private LikeService likeService;
    @Autowired
    private FollowService followService;
    @Value("${qiniu.key.access}")
    private String accessKey;
    @Value("${qiniu.key.secret}")
    private String secretKey;
    @Value("${qiniu.bucket.header.name}")
    private String headerBucketName;
    @Value("${qiniu.bucket.header.url}")
    private String headerBucketUrl;

    @LoginRequired
    @RequestMapping(path = "/setting", method = RequestMethod.GET)
    public String getSettingPage(Model model) {
        //上传文件名称
        String fileName = CommunityUtil.generateUUID();
        //设置响应信息
        StringMap policy = new StringMap();
        policy.put("returnBody",CommunityUtil.getJSONString(0));
        //生成上传凭证
        Auth auth = Auth.create(accessKey,secretKey);
        String uploadToken = auth.uploadToken(headerBucketName,fileName,3600,policy);
        model.addAttribute("uploadToken",uploadToken);
        model.addAttribute("fileName",fileName);

        return "site/setting";
    }
    //更新头像的路径
    @RequestMapping(path = "/header/url",method = RequestMethod.POST)
    @ResponseBody
    public String updateHeaderUrl(String fileName){
        if(StringUtils.isBlank(fileName)){
            return CommunityUtil.getJSONString(1,"文件名不能为空");
        }
        String url = headerBucketUrl+"/"+fileName;
        userService.updateHeader(hostHolder.getUser().getId(),url);

        return CommunityUtil.getJSONString(0);
    }
    //废弃
    @LoginRequired
    @PostMapping(path = "/upload")
    public String uploadHeader(MultipartFile headerImage, Model model) {
        if (headerImage == null) {
            model.addAttribute("err", "您还没有选择图片");
            return "/site/setting";
        }
        String fileName = headerImage.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        if (StringUtils.isBlank(suffix)) {
            model.addAttribute("error", "文件格式不正确");
            return "/site/setting";
        }
        //生成随机文件名
        fileName = CommunityUtil.generateUUID() + suffix;
        //确定文件存放的路径
        File dest = new File(uploadPath + "/" + fileName);
        try {
            //存储文件
            headerImage.transferTo(dest);
        } catch (IOException e) {
            logger.error("上传文件失败");
            throw new RuntimeException("上传文件失败，服务期发生异常", e);
        }
        //更新当前用户的头像的路径(web访问路径)
        //http://localhost:8080/community/user/header/xxx.png
        User user = hostHolder.getUser();
        String headerUrl = domain + contextPath + "/user/header/" + fileName;
        userService.updateHeader(user.getId(), headerUrl);
        return "redirect:/index";
    }
    //废弃
    //获取头像
    @GetMapping(path = "/header/{fileName}")
    public void getHeader(@PathVariable("fileName") String fileName, HttpServletResponse response) {
        //服务器存放路径
        fileName = uploadPath + "/" + fileName;
        //文件后缀
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        //响应图片
        response.setContentType("image/" + suffix);
        try (
                FileInputStream fis = new FileInputStream(fileName);
                OutputStream os = response.getOutputStream();
        ) {
            byte[] buffer = new byte[1024];
            int b = 0;
            while ((b = fis.read(buffer)) != -1) {
                os.write(buffer, 0, b);
            }
        } catch (IOException e) {
            logger.error("读取头像失败：" + e.getMessage());
        }
    }
    //个人主页
    @RequestMapping(path="/profile/{userId}",method = RequestMethod.GET)
    public String getProfilePage(@PathVariable("userId") int userId,Model model){
        User user = userService.findUserById(userId);
        if (user==null){
            throw new RuntimeException("该用户不存在");
        }
        //用户
        model.addAttribute("user",user);
        //点赞数量
        int likeCount = likeService.findUserLikeCount(userId);
        model.addAttribute("likeCount",likeCount);

        //关注数量
        long followeeCount = followService.findFolloweeCount(userId,ENTITY_TYPE_USER);
        model.addAttribute("followeeCount",followeeCount);
        //粉丝数量
        long followerCount = followService.findFollowerCount(ENTITY_TYPE_USER,userId);
        model.addAttribute("followerCount",followerCount);
        //是否已关注
        boolean hasFollowed = false;
        if(hostHolder.getUser()!=null){
            hasFollowed = followService.hasFollowed(hostHolder.getUser().getId(),ENTITY_TYPE_USER,userId);
        }
        model.addAttribute("hasFollowed",hasFollowed);
        return "site/profile";
    }
}
